Year	% (modeled ILO estimate)
1991	57.149
1992	56.917
1993	56.544
1994	56.617
1995	56.187
1996	56.107
1997	55.903
1998	55.666
1999	55.507
2000	55.411
2001	55.314
2002	54.971
2003	54.556
2004	54.329
2005	54.188
2006	53.756
2007	53.555
2008	53.45
2009	53.554
2010	53.734
2011	53.755
2012	53.677
2013	53.578
2014	53.515
2015	53.449
2016	53.36
2017	53.319
2018	53.217
2019	53.208
2020	49.983
2021	50.747
2022	53.222
2023	53.369